Typewriting machine



A. G. F. KUROWSKI TYPEWRITING MACHINE June 29 1926.

Filed Nov. 2o. 192s sel Patented June 29, 1926.

Urrea srarss i 1,590,632 Partnr carica.

ALFRED Gr. F. KUROWSKI, OIE BROOKLYN, NEW YORK, ASSIGNOR T0 UNDERVOODTYPEVVRETER COMPANY, 0F NEW YORK, N. Y., .A` CORPORATION 0F DELAWARE.

TYPEWRITING- MACHINE.

Application led November The invention relates to sound-deadening shoesfor typewriting machines. A feature of the invention isthe provision ofmeans, or a shaping of the shoe, such that the shoe may be equallyapplicable to machines of so-called standard construction and machinesof special construction, such, for instance, as bookkeeping machineshaving platens and platen-carriages of greater length, size and weightthan the platens and platen-carriages of the standard machines.

A A further feature of the invention is the construction of the shoe intwo pieces, one to comprise the back and side walls, and the other to bea base-plate; and of means whereby the base-piece may he effectivelysecured to the other piece to form a strong and rigid unit therewith.

A further feature of the invention is a special shaping of the sidewallsof the shoe to provide clearance for the carriage-runway supportsof special machines, and to provide for access to mechanisms, such, forinstance, as the ribbon-winding mechanism, so that such mechanisms maybe operated without removal of the shoe.

Other features and advantages will hereinafter appear. y In theaccompanying drawings, Figure 1 is a view, in side elevation, of theshoe; the same being shown applied to a standard typewriting machine,and one corner thereof being shown as broken away to show the manner inwhich the parts thereof are assembled.

Figure 2 is a view similar to Figure 1, except that the shoe is shown asapplied to bookkeeping typewriting machine.y

Figure 3 is a view, in front elevation, of the right-hand end of theshoe and machine.

The shoe comprises a shell, preferably of pressed sheet-metal, and whichis in two pieces. One piece, by means of a blanking and forming die, isbent to shape a back wall 10 and two side walls 11. The bends in thispiece are so made that, when the shoe is on'the machine, the side walls11 closely embrace theV sides of the main frame of the machine below theplaten-carriage of the latter. The wall-portions 10 and 11 haveembossments 22 and 23, stamped or pressed therein to form ribs tostrengthen and add rigidity to the shoe. y.

20, 1923. SerialiNo. 675,813.

The other piece 12 forms the base of the machine. `For connecting thebase-piece 12 to the first-mentioned piece, the base-piece has a flange18 turned up from the rear edge thereof, and this flange is secured tothe hack and side walls of the shoe by spotwelding. The base-piece 12may also have side flanges similar to the iiange 13, whereby it may bewelded to the side walls 11; or may have av series of tongues struck upfrom its edges for welding to the side and back walls. f

The back andside walls are lined by a strip or strips 14of-sound-deadening material, such as felt, and the base-piece is linedby a thin sheet 15 of the same or similar sound-deadening material. Forretaining the machine against forward displacement in the shoe, there isa flange lupturned from the front edge of the base-piece 12; and thisfiange also preferably has an inner facing 17 of felt or likesound-deaden ing material. rlthe machine has front feet 18 and rear feet19 on the bottom of the front and rear corner-posts 2O and 21, on eachside of the machine. W'hen the machine is in place in the shoe, thefront feet 18 will be set closely to the lining-piece V1'7 of the flange16 on r the hase-plate. As shown in the drawings, the feet 18 and 19rest directly on the top of the base-plate.

Typewriting machines may be of so-called standard construction, that isto say, ofecenstruction 'adapted for ordinary and miscellaneous classesof work, or may beof other than so-called standard construction, as, forinstance, such as have carriages of great length for holding largesheets, in the use of the machines for bookkeeping and other purposes.Although, in certain of the features, the machines may differ from oneanother, yet the hase-areas of the main frames of the machines used forthese several purposes may be the same; so that the shoe above describedmay be fitted onto the main frame of any of such machines.

' Vhere, however, as in a bookkeeping machine, the platen andplaten-carriage are of great length,-and, consequently, have muchgreater travel than the travel of the platen and ycarriage of thestandard machine, thel rails on which the carriages travel on the mainframe are of correspondingly great length, and, therefore, areordinarily supported somewhat differently than the carriage-runway railsof the standard machine. Furthermore, the supportsl for thecarriagerunways of a bookkeeping machine sustain ,a weight of carriagewhich may be muchy prises bracket on each. side. of the machine,

having a rib or ribs curved upward and latorally outward from the frontcornerfposts of they main trame. These ribs may join suchl frontcorner-nosts at points which are below the normal and convenientposition for the upper edge of the shoe. VSuch ribs are indicated in thedrawings at 214 and 25.-

ln order that the shoe may be used not only on standard machines, butupon ,book-v keeping 'orV special machines such asV described, withoutinterference of the. side walls ll with thev bracket-ribs 24 and 25, andin order that the ribs 24 and 25.. may' clear the upper edges of' theside walls 11, whatever the position of the platen-carriagm the upperAedgesof the side walls are cut down ori-shaped as at 26. The upper edgesof thek walls lll are alsoV recessed at 2T toy pro.- Vide clearance forthe support 28' for the rear carriagemail; and aierecessedat 29 toprovide clearance for thesupport Vfor the platen-shift frame. i s

lin order to assure. clearance between the side walls ll and thecarriage-supporting ribs or brackets, without too great a cutting of thewalls 11 at 26, it may be advisablel to interposeheavy washers or blocks33.: between the rubber feet 181 and i9- and lugs: 30', to whichv thefeet are secured on the` main trame. The feet i8 and` 19 are ordinarilysecured to the lugs by means obolts 3l, which have heads- 3'21 setintocountersinlrs in the base of the feet, and which extend upwardthrough the feet and thready into the lugs: 30. lt is only necessary to.make: these boltso' suiiijcient length to provide for the interpositionof the washers or blocks: 3.3.

For winding! or rewinding the ribbon of the typewriting' machine-,jarotary sha-ft or spindleA is commonly provided. There a shoe suchaszdiescribed is used, and in order that remonal of the. shoe may not berequired for such winding and rewinding of the ribbon, one of the sidewalls 1l .of the shoe is: perforated to.- permit passage therethroughof' aY shaft to` connectWiththe shaft or spindle which winds the ribbon.This perforation is shown as a slot 34:l in-the right-han-dy wall-1l ofthe shoe. It' i-s a vertical slot, instead off a mere circular hole, inorder to adaptthe shoe for nse-ind-iii'erently with a machine such as:the standard chine, which sits lowy in the shoe, and which,consequently, has its ribbon-winding shaft at one position, and amachinewhichis set higher in the shoe, as by means of the washtwopieces,onev piece being o. base platev and the otherpiece. being bent-aroundthe edges of the base plate. to` form a baclrwall and two side walls oftheshoe, the side walflsbeing spaced apart at such distance as closelytoembrace the sidesgof the frame of the machine, the walls= of the shoeextending up.- wardly tov approximately the Vfront and overhanging partsof the, machine and the front of the walls of the shoe terminating atthe *front* of the upright vframeof the -macillile, and` a sounddeadeningylininghfor the se 2'.' A soundl deadening shoe for' atypewriting machine, which machine has anup rightt'rame and overhangingfront and back parts, said shoe comprising a shellin two pieces, onepiece being' a base plate havingy a flange o-r tongue turned up from theedge thereof, the other piece of theshoe. befing bent around the baseVpl-'ate pieceto form a back wall and `two side walls, the side wallsbeing spaced apart at suchv distance as closely to embrace the sides ofthey frame of the machine, the side wallsv or the shoe extendingupward-ly to approximately the front and back overhanging parts of themachine and the front. of Vthe side walls terminating at the front ofthe upright frame of' the machine,v the side and back wall piece of' theshoe being` fastened to the iiange or tongue of the base plate piece,and a sound deadening lining for the shell.

B. A sound deadening shoe, forJ a typewriting machine of the typethat'has' an upright frame. and a fro-nt projecting portion, said shoecomprising a Shell in two pices, one piece being a base plate having aflange or yrib on the front edge thereof, the other piece of the shoebeing benty around the, rear and sid-es offk the base piece to form: aback Vwall and two side walls, the side walls being` spaced apart atsuch distance Kas closely to embrace the sides of the frame ofthemachine and terminating at the yfrontl portion offsaidv frame, theflange or rib of' the front edge `of the base piece extending in frontofthe bottom portion of the.` typewriter .framey to 'retain the machineagainst for-ward displacement, andV a sound deadening lining for theshell.

el. A sound deadening shoe yfor a typewriting machine comprisingvva'sheet metal shell in two pieces, one piece being a base plate and theother piece being bent around the base plate to form a back wall andtl'ie two side walls, the side walls being embossed to formstrengthening ribs, the base plate piece having a flange or tongueturned up from the edge thereof for attachment to the piece of the shellforming the side walls and back wall of the shoe, and a sound deadeninglining for the shell. y

5. A sound deadening shoe for a typewriting machine comprising a sheetmetal shell in two pieces, one piece being a base plate and the otherpiece being bent around the base plate to form a back wall and two sidewalls, the back wall and two side walls extending upwardly substantiallythe same distance throughout, the side walls having cutaway portions toaccommodate the overhanging parts of the machine and terminating .invertically extending front edges at the front of the typewriting frame7the side and back wall being embossed to form strengthening ribs and thebase plate having a flange upturned from the front edge thereof adaptedto rest in front of the typewriter feet for retaining the machineagainst forward displacement, and a sound deadening lining for theshell.

ALFRED G. F. KUROWSKI.

